centralize jquery && bugfix mysql auto-termination problem w/ user auth

src/Mine/SeekerBundle/Periodic/MinePeriodic.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace Mine\SeekerBundle\Periodic;
+
+use Doctrine\DBAL\Driver\PDOException;
+use Doctrine\ORM\EntityManager;
+use Gos\Bundle\WebSocketBundle\Periodic\PeriodicInterface;
+
+class MinePeriodic implements PeriodicInterface
+{
+    private $em;
+
+    public function __construct(EntityManager $entityManager)
+    {
+        $this->em = $entityManager;
+    }
+
+    /**
+     * This function is executed every 5 seconds.
+     *
+     * For more advanced functionality, try injecting a Topic Service to perform actions on your connections every x seconds.
+     */
+    public function tick()
+    {
+        try {
+            $connection = $this->em->getConnection();
+
+            if (false === $connection->ping()) {
+                $connection->close();
+                $connection->connect();
+            }
+        } catch(PDOException $ex) {
+            throw PDOException::class;
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getTimeout()
+    {
+        return 777;
+    }
+}